Anonymous_User Absent Member.
Absent Member.
1052 views

HP LaserJet "Lock-ups" after going to SNMP Gateway

I've noticed this problem lately. Actually, ever since we converted our
printer agents from HP Gateways to the Novell SNMP Gateways.

What happens is we have three different models of printers, in three
different buildings (across town). Hp LJ1200, LJ2200DTN, and LJ1320. They
are either networked with external 1-port JetDirect boxes (300x) or an
internal card (the 2200DTN).

These three models of printers have problems with "lock-ups." What happens
is that overnight, when nobody is printing at all, the printer locks-up.
All three lights on the printer are illuminated. The printer does nothing
until it is powered off/on. After a power off/on, it works fine. We do NOT
have to reset the JetDirect boxes.

We first thought it was power or bad printers, but if we just connect these
printers to workstations, they work great, and NEVER have the problems
listed above. They only lock-up overnight, when connected to the network.

All the printers worked perfect, until we migrated from the HP Gateway to
the Novell SNMP gateway. Some other users on the HP forums have noticed the
same problems, but there's no specifics or a resolution. Anyone else having
this problem? Any suggestions?

Thanks!


0 Likes
4 Replies
Anonymous_User Absent Member.
Absent Member.

HP LaserJet "Lock-ups" after going to SNMP Gateway

As a TEST only, try changing the gateway load string to include
a "NOSNMP" and "NOQUERY" flags at the end of the command line..

Example: NDPSGW PORT=LPR HOSTADDRESS=1.1.1.1 PRINTERNAME=PASSTHROUGH
NOSNMP NOQUERY.

What you want to see is if the printer locks up during the course of the
night...


> I've noticed this problem lately. Actually, ever since we converted

our
> printer agents from HP Gateways to the Novell SNMP Gateways.
>
> What happens is we have three different models of printers, in three
> different buildings (across town). Hp LJ1200, LJ2200DTN, and LJ1320.

They
> are either networked with external 1-port JetDirect boxes (300x) or an
> internal card (the 2200DTN).
>
> These three models of printers have problems with "lock-ups." What

happens
> is that overnight, when nobody is printing at all, the printer locks-

up.
> All three lights on the printer are illuminated. The printer does

nothing
> until it is powered off/on. After a power off/on, it works fine. We

do NOT
> have to reset the JetDirect boxes.
>
> We first thought it was power or bad printers, but if we just connect

these
> printers to workstations, they work great, and NEVER have the problems
> listed above. They only lock-up overnight, when connected to the

network.
>
> All the printers worked perfect, until we migrated from the HP Gateway

to
> the Novell SNMP gateway. Some other users on the HP forums have

noticed the
> same problems, but there's no specifics or a resolution. Anyone else

having
> this problem? Any suggestions?
>
> Thanks!
>
>


0 Likes
Anonymous_User Absent Member.
Absent Member.

Re: HP LaserJet "Lock-ups" after going to SNMP Gateway

Ryan wrote:
> I've noticed this problem lately. Actually, ever since we converted our
> printer agents from HP Gateways to the Novell SNMP Gateways.
>
> What happens is we have three different models of printers, in three
> different buildings (across town). Hp LJ1200, LJ2200DTN, and LJ1320. They
> are either networked with external 1-port JetDirect boxes (300x) or an
> internal card (the 2200DTN).
>
> These three models of printers have problems with "lock-ups." What happens
> is that overnight, when nobody is printing at all, the printer locks-up.
> All three lights on the printer are illuminated. The printer does nothing
> until it is powered off/on. After a power off/on, it works fine. We do NOT
> have to reset the JetDirect boxes.
>
> We first thought it was power or bad printers, but if we just connect these
> printers to workstations, they work great, and NEVER have the problems
> listed above. They only lock-up overnight, when connected to the network.
>
> All the printers worked perfect, until we migrated from the HP Gateway to
> the Novell SNMP gateway. Some other users on the HP forums have noticed the
> same problems, but there's no specifics or a resolution. Anyone else having
> this problem? Any suggestions?


We've seen exactly this problem with many of our HP printers, including
the same models you mention. Have a search through the list archives at
http://lists.redlands.qld.edu.au/pipermail/novellschools/
For a discussion (with no solution yet) on this. This is a definite bug
in HP's JetDirect firmware, but they haven't been forthcoming on a solution.

I will be interested to see if the suggestion to use NOSNMP or NOQUERY
works for you... I must admit i haven't seen too many occurrences of
this since we went to NW65SP4a, so it might be that they've worked
around the problem on the server side (by not sending the offending SNMP
query or whatever it is that causes this).

Paul
0 Likes
Anonymous_User Absent Member.
Absent Member.

Re: HP LaserJet "Lock-ups" after going to SNMP Gateway

Are your printers firewalled from the internet? If not, I suggest you
put an access list on the Jetdirect interface to limit what addresses
can talk to the printer. Also, I'd review the protocols and other
settings you have, and turn off everything you don't need, and make sure
you set the snmp set community to non-default, as well as the telnet/web
password. Here is a good place to start, though it must be reviewed to
be sure it meets with your own network policies:

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=bpj05999

We've got over 200 Jetdirect devices on our network, and I'm convinced
that these steps keep our printers healthly. Jetdirect devices have a
history of not handling scanning very well, and can be knocked over
pretty easily. No passwords mean anyone can get in and screw around
with them.

Of the models you mention, we don't have a lot of them, but I would add
that they are more touchy than the standard 4xxx series printers, but
usually firmware updates have helped. Sometimes you are out of luck
with external boxes, but I would check to be sure your firmware is current.

Ryan wrote:
> I've noticed this problem lately. Actually, ever since we converted our
> printer agents from HP Gateways to the Novell SNMP Gateways.
>
> What happens is we have three different models of printers, in three
> different buildings (across town). Hp LJ1200, LJ2200DTN, and LJ1320. They
> are either networked with external 1-port JetDirect boxes (300x) or an
> internal card (the 2200DTN).
>
> These three models of printers have problems with "lock-ups." What happens
> is that overnight, when nobody is printing at all, the printer locks-up.
> All three lights on the printer are illuminated. The printer does nothing
> until it is powered off/on. After a power off/on, it works fine. We do NOT
> have to reset the JetDirect boxes.
>
> We first thought it was power or bad printers, but if we just connect these
> printers to workstations, they work great, and NEVER have the problems
> listed above. They only lock-up overnight, when connected to the network.
>
> All the printers worked perfect, until we migrated from the HP Gateway to
> the Novell SNMP gateway. Some other users on the HP forums have noticed the
> same problems, but there's no specifics or a resolution. Anyone else having
> this problem? Any suggestions?
>
> Thanks!
>
>

0 Likes
Anonymous_User Absent Member.
Absent Member.

Re: HP LaserJet "Lock-ups" after going to SNMP Gateway

Timothy Biles wrote:
> Are your printers firewalled from the internet? If not, I suggest you
> put an access list on the Jetdirect interface to limit what addresses
> can talk to the printer.
> ...
> We've got over 200 Jetdirect devices on our network, and I'm convinced
> that these steps keep our printers healthly.
> ...
> Of the models you mention, we don't have a lot of them, but I would add
> that they are more touchy than the standard 4xxx series printers, but
> usually firmware updates have helped. Sometimes you are out of luck
> with external boxes, but I would check to be sure your firmware is current.


We've done comprehensive firmware upgrades and had little obvious change.

As far as i'm aware, *all* of our printing is server-based (i.e. nothing
direct), and i'm planning to enforce this soon by putting all printers
in a separate VLAN with no access from desktop VLANs.

One of the other sites i know of which has this problem has taken packet
traces from the same hub as the printer and still hasn't been able to
narrow down exactly what it is that causes the problem.

Paul
0 Likes
The opinions expressed above are the personal opinions of the authors, not of Micro Focus. By using this site, you accept the Terms of Use and Rules of Participation. Certain versions of content ("Material") accessible here may contain branding from Hewlett-Packard Company (now HP Inc.) and Hewlett Packard Enterprise Company. As of September 1, 2017, the Material is now offered by Micro Focus, a separately owned and operated company. Any reference to the HP and Hewlett Packard Enterprise/HPE marks is historical in nature, and the HP and Hewlett Packard Enterprise/HPE marks are the property of their respective owners.